fix: add Discord OAuth token exchange logging for production diagnostics

- Log status code and response body when Discord /oauth2/token fails
- Helps identify why ExchangeCodeAsync returns null in production

Bump version → 2.8.1

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 2.8.0
+  VERSION: 2.8.1
 
 jobs:
   # ЧАСТЬ 1: Собираем образы и кладем в Gitea (чтобы делиться с ребятами)

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <Version>2.8.0</Version>
+    <Version>2.8.1</Version>
     <TargetFramework>net10.0</TargetFramework>
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>

compose.yaml

@@ -49,7 +49,7 @@ services:
         crond -f
 
   bot:
-    image: git.codeanddice.ru/toutsu/gmrelay-bot:2.8.0
+    image: git.codeanddice.ru/toutsu/gmrelay-bot:2.8.1
     restart: always
     depends_on:
       db:

src/GmRelay.Web/Components/Layout/NavMenu.razor

@@ -66,7 +66,7 @@
                     </button>
                 </form>
 
-                <div class="nav-version">v2.8.0</div>
+                <div class="nav-version">v2.8.1</div>
             </div>
         </Authorized>
         <NotAuthorized>

src/GmRelay.Web/Services/DiscordAuthService.cs

@@ -5,7 +5,7 @@ using System.Text.Json.Serialization;
 
 namespace GmRelay.Web.Services;
 
-public sealed class DiscordAuthService(IHttpClientFactory httpClientFactory, IConfiguration configuration)
+public sealed class DiscordAuthService(IHttpClientFactory httpClientFactory, IConfiguration configuration, ILogger<DiscordAuthService> logger)
 {
     private readonly DiscordOAuthOptions _options = configuration.GetSection("Discord").Get<DiscordOAuthOptions>() ?? new DiscordOAuthOptions();
 
@@ -40,10 +40,14 @@ public sealed class DiscordAuthService(IHttpClientFactory httpClientFactory, ICo
         });
 
         var response = await client.PostAsync("https://discord.com/api/oauth2/token", content);
-        if (!response.IsSuccessStatusCode)
-            return null;
-
         var json = await response.Content.ReadAsStringAsync();
+        if (!response.IsSuccessStatusCode)
+        {
+            logger.LogError("Discord token exchange failed: {StatusCode} {Body}. client_id={ClientId}, redirect_uri={RedirectUri}",
+                (int)response.StatusCode, json, _options.ClientId, _options.RedirectUri);
+            return null;
+        }
+
         return JsonSerializer.Deserialize<DiscordTokenResponse>(json);
     }
 

tests/GmRelay.Bot.Tests/Web/DiscordAuthServiceTests.cs

@@ -3,6 +3,7 @@ using System.Text.Json;
 using GmRelay.Web;
 using GmRelay.Web.Services;
 using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging.Abstractions;
 
 namespace GmRelay.Bot.Tests.Web;
 
@@ -20,7 +21,7 @@ public class DiscordAuthServiceTests
             })
             .Build();
 
-        var service = new DiscordAuthService(new TestHttpClientFactory(), config);
+        var service = new DiscordAuthService(new TestHttpClientFactory(), config, NullLogger<DiscordAuthService>.Instance);
         var url = service.BuildAuthorizeUrl("state123");
 
         Assert.Contains("client_id=12345", url);
@@ -33,7 +34,7 @@ public class DiscordAuthServiceTests
     public void BuildAuthorizeUrl_WithMissingConfig_ThrowsInvalidOperationException()
     {
         var config = new ConfigurationBuilder().Build();
-        var service = new DiscordAuthService(new TestHttpClientFactory(), config);
+        var service = new DiscordAuthService(new TestHttpClientFactory(), config, NullLogger<DiscordAuthService>.Instance);
 
         Assert.Throws<InvalidOperationException>(() => service.BuildAuthorizeUrl("state"));
     }
@@ -74,7 +75,7 @@ public class DiscordAuthServiceTests
             .Build();
 
         var factory = new TestHttpClientFactory(handler);
-        var service = new DiscordAuthService(factory, config);
+        var service = new DiscordAuthService(factory, config, NullLogger<DiscordAuthService>.Instance);
 
         var result = await service.ExchangeCodeAsync("valid_code");
 
@@ -102,7 +103,7 @@ public class DiscordAuthServiceTests
             .Build();
 
         var factory = new TestHttpClientFactory(handler);
-        var service = new DiscordAuthService(factory, config);
+        var service = new DiscordAuthService(factory, config, NullLogger<DiscordAuthService>.Instance);
 
         var result = await service.ExchangeCodeAsync("invalid_code");